article human human cell metabolism Humans 111 controlled study 101 priority journal 61 animal 55 Animals 53 genetics 52 protein expression 49 signal transduction 49 physiology 46 cell line 41 female 41 unclassified drug 40 drug effect 39 nonhuman 39 Cell Line 38 Mice 35 mouse 35 Cell Line, Tumor 33 tumor cell line 33 chemistry 31 Female 30 animal cell 29 cell culture 29 Signal Transduction 28 Western blotting 26 apoptosis 26